Essential Knowledge and Skills (TEKS)

8.1.A: compare and order rational numbers in various forms including integers, percents, and positive and negative fractions and decimals;

Comparing and Ordering Decimals

Comparing and Ordering Fractions

Comparing and Ordering Integers

Ordering Percents, Fractions and Decimals

Ordering Percents, Fractions and Decimals Greater Than 1

Percents and Proportions

8.1.B: select and use appropriate forms of rational numbers to solve real-life problems including those involving proportional relationships;

Estimating Population Size

Improper Fractions and Mixed Numbers

8.1.C: approximate (mentally and with calculators) the value of irrational numbers as they arise from problem situations (such as pi, square root of 2); and

8.3.B: estimate and find solutions to application problems involving percents and other proportional relationships such as similarity and rates.

Perimeters and Areas of Similar Figures

Similar Figures - Activity A

Similar Polygons

8.4.A: The student is expected to generate a different representation of data given another representation of data (such as a table, graph, equation, or verbal description).

Introduction to Functions

Linear Functions

Using Tables, Rules and Graphs

8.5.A: predict, find, and justify solutions to application problems using appropriate tables, graphs, and algebraic equations; and

Distance-Time Graphs

Graphing Skills

8.5.B: find and evaluate an algebraic expression to determine any term in an arithmetic sequence (with a constant rate of change).

Arithmetic Sequences

Arithmetic and Geometric Sequences

Using Algebraic Equations

Using Algebraic Expressions

8.6.A: generate similar figures using dilations including enlargements and reductions; and

Perimeters and Areas of Similar Figures

Similar Figures - Activity A

Similar Polygons

8.6.B: graph dilations, reflections, and translations on a coordinate plane.

Circles

Dilations

Quilting Bee (Symmetry)

Reflections

Rock Art (Transformations)

Rotations, Reflections and Translations

Translations

8.7.B: use geometric concepts and properties to solve problems in fields such as art and architecture;

8.7.C: use pictures or models to demonstrate the Pythagorean Theorem; and

Distance Formula - Activity A

Geoboard: The Pythagorean Theorem

Pythagorean Theorem - Activity A

Pythagorean Theorem - Activity B

8.7.D: locate and name points on a coordinate plane using ordered pairs of rational numbers.

City Tour (Coordinates)

Points in the Coordinate Plane - Activity A

8.8.A: find lateral and total surface area of prisms, pyramids, and cylinders using concrete models and nets (two-dimensional models);

Prisms and Cylinders - Activity A

Surface and Lateral Area of Prisms and Cylinders

Surface and Lateral Area of Pyramids and Cones

8.8.B: connect models of prisms, cylinders, pyramids, spheres, and cones to formulas for volume of these objects; and

Prisms and Cylinders - Activity A

Pyramids and Cones - Activity A

8.8.C: estimate measurements and use formulas to solve application problems involving lateral and total surface area and volume.

Prisms and Cylinders - Activity A

8.9.A: use the Pythagorean Theorem to solve real-life problems; and

Distance Formula - Activity A

Geoboard: The Pythagorean Theorem

Pythagorean Theorem - Activity A

Pythagorean Theorem - Activity B

8.9.B: use proportional relationships in similar two-dimensional figures or similar three-dimensional figures to find missing measurements.

Perimeters and Areas of Similar Figures

8.10.A: describe the resulting effects on perimeter and area when dimensions of a shape are changed proportionally; and

Area of Parallelograms - Activity A

Circle: Circumference and Area

Minimize Perimeter

Perimeter, Circumference, and Area - Activity B

Prisms and Cylinders - Activity A

Rectangle: Perimeter and Area

8.10.B: describe the resulting effect on volume when dimensions of a solid are changed proportionally.

Circle: Circumference and Area

Prisms and Cylinders - Activity A

Pyramids and Cones - Activity A

8.11.A: find the probabilities of dependent and independent events;

Compound Independent Events

Compound Independent and Dependent Events

Spin the Big Wheel! (Probability)

8.11.B: use theoretical probabilities and experimental results to make predictions and decisions; and

Geometric Probability - Activity A

Probability Simulations

Spin the Big Wheel! (Probability)

Theoretical and Experimental Probability

8.11.C: select and use different models to simulate an event.

8.12.A: select the appropriate measure of central tendency or range to describe a set of data and justify the choice for a particular situation;

Box-and-Whisker Plots

Describing Data Using Statistics

Line Plots

Mean, Median and Mode

Movie Reviewer (Mean and Median)

Reaction Time 1 (Graphs and Statistics)

8.12.B: draw conclusions and make predictions by analyzing trends in scatterplots; and

Correlation

Scatter Plots - Activity A

Solving Using Trend Lines

8.12.C: select and use an appropriate representation for presenting and displaying relationships among collected data, including line plots, line graphs, stem and leaf plots, circle graphs, bar graphs, box and whisker plots, histograms, and Venn diagrams, with and without the use of technology.

Box-and-Whisker Plots

Describing Data Using Statistics

Graphing Skills

Histograms

Line Plots

Mean, Median and Mode

Reaction Time 1 (Graphs and Statistics)

Stem-and-Leaf Plots

Correlation last revised: 8/7/2014

This correlation lists the recommended Gizmos for this state's curriculum standards. Click any Gizmo title below for more information.